Variable-speed and reversing mechanism.



l N. s. HARTER. VARIABLE SPEED AND REVBRSING MEOHANISM.

Patented 991.9291908. l9 SHEETS-SHEET 1.1

El 'A APPLICATION FILED DBO. 2, 1907.

N. S. HARTER. VARIABLE SPEED MID RBVBESING MBGHANISM. APPLIOATION FILBD DBO. 2, 1907,

Patented Sept 29, 1908.

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' n' l TNESSS NOAH HARTER, OF WAUKEGAN, ILLINOlS.

' yvAnLAJsLE-smania ArmA REVERSING MECHANISM.-

i No. 899,974.

Specification of Letters Patent.V

Patented Sept. 29, 1908.

Application medpecember 2, i907. scrinium/1,689. l ,f

To. all whom it may concern:

Be-it knownthat I, NOAH S. HARTER', a

citizen of the United States, residing'at Vans kegan, in the county of Lake and Statel of Illinois, have' invented ,certain new and useful Improvements in Variable-Speed and Reversing Mechanism, of which 'the following is a specification.

My invention .relatesl to a variable speed and reversing mechanism and has for its object to provide a simpleandefiicient device for the purpose o`f transmitting power .from

one point to another at anyvdesired speed and in either direction, forwarder reverse, and whereby the regulation ofthe speed and the 'direction of rotation may be conveniently governed by means of 'a single lever.

With these and other objects in view 'my' invention specifically resides in the following 'features of construction, larrangement and operation to behereinafter described with reference to the accompanying drawings, forminga part of this specification, in which like numerals are used to designate 'like arts throughout the several figures, and in w ich,

Figure 1 is an elevation, partly in section, villustrating a variable speed, and reversing mechanism, constructed in accordance `with my invention, and particularly designed for employment in connection Withfmotor vehicles, having axiallyalined driving and'driven shafts, Fig. 2 is. a section al `view taken .therethrough on the line'22.;ofliig:` 1, and Fig.v 3 is an elevation'partly in section of my improved 'mechanism employed in connection with a pulley shaft.

l In the practical embodiment ofinvention, I rovide mechanism co'nprisinga drivingvslliaft `2 )referably concentric with the driven memlber ,3 inwhateverfform the Ilatter may beiemployed, said driving member being provided with a-bevel` gear 4 with bevel gears v5 mounted upon meshing short siafts -6 suitablyJoui-naled at right angles'to saidv shaft 2. The driving shaft 'or member 2 is suitablyconnccted by planetary i .gearing to the driven member, whichv gearing and connection will be hereinafter speefically' described, and said shaft 2 is further'provi ed with al sleeve 7 rotatively mopnted thereon, carrying a pinion 8 at one end thereof suitably engaging within the planetary 'gearing connecting said driving and driven members 2 and 3. Splined yuponhtle sleeve 7V is a friction wheel 9 to slidev thereon under:

Aactuation of p7 suitable lever or the like'and edu on the short shafts '6 beyond their beve gears 5.

From the foregoing descri tion generic to all the figures it maybe state that the driven member 3 is rotated directly from the driving member 2 by the planetary gearing described, and that the' friction gearing connecting with said planetary gearing as described, coperates with the same to form a engaging the faces` of friction disks l() mountli O differential variable gearing which will be f strong anddu-rable and in whichthere will be a minimum of friction between the movlng parts.- Pivot levers 11 may he provided with one of their ends abutting the outer ends of the short shafts 6 in order to press the disks 10 into secure friction engagement with the friction wheel t).

In the embodiment of my invention shown in Figs. 1 and 2 especially designed for use in' connection with motor vehicles having aXi i ally-alined driving and driven shafts, the

end ofthe driving shaft or member 2 is provided with a stud 12 entering a recess in the end of the "driven shaft 13 axially alined therewith. `Inthis form, the driven member 3 is in the form of a casing continuously internally threaded Within its outer portion 'and provided with a tubular inner portion 14 keyedl upon the driven shaft 13, to in turn rotate the same. The ond of` the driving shaft 2 adjacent its stud 12 isprovided with a' spider 1'5 comprising a plurality of outstanding arms having gear' wheels lo journaled in theends thereof and in engagement with the internally threaded portion'of the driven membery 3. The 'pinion 8 at one end of the sleeve 7 is of substantially the same size as the gear Wheels 16 and engages therewith to connect the-same with .the .friction gearing,

asis clearly shown. ln'this form also; I provide the friction wheel 9 and the bevel gear 4 mounted on the driving'shaft, vwith clutch faces 17 and 18, whereby the-friction wheel Q and the sleeve 7 may be driven directly from the driving shaft. through its bevel gear 4.

`In the form shown in Fig. 3 the mechanisin is almost identical with that shown and described with relation to Fig. 1 with the ex;

ceptionthat the driving shaft 2 is a one piece shaft and that the driiren member 3 isintfhe form of a pulley'wheel from which the power may be taken and is provided with a sleeve portion 19 loosely rotatingupon said shaft 2, said' pulley being providcd'with a flange ring lOO rio

20 bolted'thcreto and internally threaded to be engaged by the gear wheels 1G journaled upon the ends of the arms of the spider l5. 'lhe operation of this form is identical with that 'of Fig. 1.. f

It `will not be necessary yto elucidate to any great extent the o eration of the device shown and describe inasmuch as the same will be readily apparent to persons skilled in this art by reference to the accon'ipan'ying drawings and the description thereof. lt may, however, be here stated that the opera tion of the device shown in Fig. 3 is the same as 'that shown in Figs. 1 and 2, and that in each of these figures power is transmitted from the driving member to the driven member 3 through a planetary gear, the friction .gearing being also driven from said driving member and connectin r With said planetary gearing to cooperate t ierevvith in differen- Vtia'llyedriving said driven member.

From this it will be ap arent that in one position of the friction Wheel 9 which i will term a central position, the driving through the planetary Gearing and through the friction gearing will be equalizing in their effect upon the drivenmember and the same will, consequently, remain stationary. When, however, the friction wheel 9 is moved in either direction from said central point the speed of the driven member Will be correspondingly increased in either the forward or reverse drive. y

Having thus fully described my invention, claim:

1. in a variable speed and reversing mechanism, the combination of a driving member, a driven member concentric therewith and provided with a geared portion, planetary' gearing carried by said driving member and engaging said geared portion of said driven member, shafts mounted adjacent and at right angles to said driving member, friction disks mounted upon said shafts, gearing connecting said driving member and said shafts, a sleeve loosely mounted upon said driving member between said shafts and said driven member, and provided-with a geared portion engaging with said planetary gearin of said driving member, and a friction Whee s lined upon said sleeve in engagement wit 1 said friction disks, substantially as described'.

i?. In a variable speed and reversing mechanism, the combination ol' a driving member, a driven member concentric therewith and provided with a geared portion, .a plurality of gears mounted in a circular series about, and concentric with, said driving member, and engaging said geared portieri of said driven member, connections between said driving member and said circular series of gears, shafts mounted adj acent and at right, angles to said driving member, friction disks mounted upon said shafts, gearing connecting saiddriving member and said shafts, a sleeve loosely mounted upon said driving member vbetween said shafts and said driven member, I and provided with a geared portion to engage said circular series of gears, and a friction Wheel splined upon said sleeve in engagement with said friction disks, substantially as,de. scribed.

3. In a variable speed and reversing mechanism, the combination of a driving member, a driven member concentric therewith and provided with a geared portion, a plurality of gears mounted in 'a circular series about, and concentric with, said driving member, and engaging said geared portion of said driven member, connections between said driving member and said circular series of gears, shafts mounted adjacent and at right angles to said driving member, friction disks mounted. upon said shafts, gearin connecting said driving member and sai( shafts, a sleeve loosely mounted upon said driving member between said shafts and said driven member, and frovided with a geared portion to engage sai circular series of gears, and a friction Wheel splined upon said sleeve in engagement with said friction disks, said friction wheel having a notched portion adapted for engagement with a notched member of said gearing connecting said driving member and said transverse shafts, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

N QAH S. HARTER.

Witnesses: l

C. G. MARKS, l ,D S. THOMSON. 

